Device for determination of the angular position of a rotating body

Active Publication Date: 2008-07-22
CONTINENTAL AUTOMOTIVE FRANCE
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem then arises of generating a magnetic flux whose direction varies continuously, in the vicinity of the magnetoresistive sensor, as a function of the angular position of the rotating body relative to the support, over a range of angular positions covering at least 90°.
However, the situation is completely different when such a configuration is not possible.
However, it is then not obvious how to ensure that said ring-shaped generator generates a magnetic flux such that the angle between the magnetic flux and the sensor varies continuously as a function of the angular position of the rotating body.
But, unless a bar of large dimensions is provided, the magnet rapidly finds itself remote from the sensor, such that it is possible to cover only a narrow range of angular positions.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device for determination of the angular position of a rotating body
  • Device for determination of the angular position of a rotating body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013]FIGS. 1 and 2 illustrate a device 1 for determination of the angular position a of a rotating body relative to a support. Here, the rotating body consists of a hinge pin 2 of a pedal guided in rotation relative to the structure 4 of the vehicle.

[0014]The device 1 substantially comprises a magnetic flux generator 6 fixed to the hinge pin 2 and a sensor 8 of the magnetoresistive type fixed to the structure 4 of the vehicle.

[0015]The magnetic flux generator 6 takes the form of a ring portion extending over an angular sector having an arc of at least 120 degrees. In one embodiment, the ring portion extends over an angular sector of approximately 135 degrees. As illustrated in FIG. 3, this magnetic flux generator is cut from a flexible strip 14 comprising a series of lines 16 extending substantially in a direction 18. These lines 16 exhibit a substantially constant width 1 perpendicular to the direction 18. They consist in known manner of magnetized metallic particles coated in foa...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A device for determining an angular position of a rotating body including a generator of magnetic flux connected to the rotating body and a magnetoresistive sensor connected to the support. The magnetic flux generator takes the form of a ring or a portion of a ring and comprises alternating poles making up a series of magnets generating magnetic fluxes in substantially parallel directions.

Description

FIELD OF THE INVENTION[0001]The invention relates to a device for determination of the angular position in a direction of rotation of a rotating body relative to a support.[0002]Such a device may be used in particular in a vehicle to know the position of a pedal, such as the clutch pedal, or of a valve such as the throttle valve.DESCRIPTION OF RELATED ART[0003]Devices are already known which comprise a magnetic flux generator and a magnetoresistive sensor generating an electrical signal as a function of the direction of the magnetic flux to which it is exposed. Such a sensor allows contactless measurement, in a reliable, robust and accurate manner, of the angular variations in magnetic flux. To avoid problems associated with transmission of the electrical signal generated by the magnetoresistive sensor, the magnetoresistive sensor is connected to the support and the magnetic flux generator to the rotating body.[0004]The problem then arises of generating a magnetic flux whose directi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01B7/30G01D5/14G01D5/16
CPCG01D5/145G01D2205/80G01D5/16
InventorMOUAICI, GERARD
OwnerCONTINENTAL AUTOMOTIVE FRANCE